Service Bulletin: 011-7383
Rev: A Page 1 of 11
Bulletin Title
Document Type
BULLETIN, SERVICE
Bulletin Status*
ADVISORY
Date
August, 2013
HD, UHD, Manipulators
002-5460 Washer, Nord-Lock, NL ¼” SS-254
002-5511 Washer, M5, STT Nord-Lock
002-5464 Washer, M6 Fender, Nord-LK
002-5517 Washer M10, Nord-Lock
002-5579 Washer, M8, SST Nord Lock 002-5652 Washer, M6, Nord-Lock
This Service Bulletin is to show the proper installation and to give some examples of improper installation of the Nord-Lock Washers used on Schilling Robotics
Equipment.
Not applicable
•
Part A – Explanation of the purpose of this Bulletin
•
Part B – Proper Installation of the Nord-Lock washers.
•
Part C – Examples of proper and improper installations
•
Part D – Warranty information
•
Part E – Update technical manuals
*BULLETIN STATUS LEVELS
MANDATORY
RECOMMENDED
Field action must be performed to ensure personnel safety, equipment functionality, and/or continuation of warranty coverage.
Field action is not required but will result in significantly increased levels of personnel safety and/or equipment functionality.
ADVISORY
Bulletin contains advisory information to assist the owner/operator in more effective operation or service of the product.
If you have any questions about this service bulletin, contact the Customer Service Department at:
Tel: +1 530 753 6718 (USA-DAV) or +1 281 598 4100 (USA-HOU) or +44 (0) 1224 215300 (UK)
Fax: +1 530-753-1534 (USA-DAV) or +1 281 598 4130 (USA-HOU) or +44 (0) 1224 215301 (UK) e-mail: schilling.TS@fmcti.com
• Web site: http://www.schilling.com
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 2 of 11
!
Failure to follow applicable safety procedures when working on the system can cause injury or death.
•
Connect grounding cables while equipment is on deck.
•
Before starting any service, always turn off hydraulic power and lock out/tag out electrical power to the system.
•
Always wear personal protective equipment (PPE) appropriate to the task and as required by applicable safety regulations and procedures. Use a safety harness secured from above when working at or above heights specified in applicable safety regulations and procedures.
•
Never stand on or crawl under suspended and unsupported system components, regardless of latch state or handling/lifting system. Always place appropriate loadrated stands under system components for support before climbing on or crawling under them.
•
Lock out/tag out electrical power and isolate hydraulic power to any launch and recovery equipment used with the system. Also release any stored or residual mechanical, electrical, and hydraulic energy to prevent unintended movements or operation.
!
Electrostatic discharge (ESD) can permanently damage sensitive electrical components like printed circuit assemblies (PCAs), integrated circuits (ICs), and other ESD-sensitive components. The damage can cause component failure or faulty or intermittent performance that can be difficult to detect and diagnose.
When you handle ESD-sensitive components, follow these ESD prevention guidelines:
•
Prepare an ESD workstation by grounding all items in the work area (work surfaces, people, equipment, etc.) to the same electrical ground point (called the common point ground). Keep the work area free of nonessential insulators (such as plastic cups, bags, and envelopes).
•
If possible, disconnect all power sources, signal sources, and loads connected to the component before you begin maintenance or service.
•
Always ground yourself before you touch ESD-sensitive equipment. Discharge any static electricity by touching ground on the workstation each time that you approach and sit at the workbench.
•
Ground all tools that may come into contact with the ESD-sensitive equipment.
•
Before you handle PCAs, ICs, and other ESD-sensitive components, attach a grounding wrist strap and confirm that the strap is connected to the grounding pad.
•
Handle PCAs by the base or edges; always avoid contact with pins.
•
Do not unnecessarily pick up, hold, or carry ESD-sensitive devices that are not in shielded packaging.
•
Always store and seal ESD-sensitive components in the anti-static packaging in which they were shipped, or in equivalent storage material.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 3 of 11
The Purpose of this service bulletin is to provide a greater understanding of the proper use and installation of the Nord-Lock washers. These washers are used as a bolt locking system on Schilling
Robotics’ ROVs, TMSs and Manipulators that can safety secure bolted joints exposed to severe vibration and dynamic loads. The system is composed of a paired of washers that have cams (course) on one side and radial teeth (fine) on the opposite side.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 4 of 11
The pre-assembled washers are installed in pairs, cam (Course side) face to cam (Course side) face and the fine cam side to face out words.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 5 of 11
Tightening
Tighten Nord-lock washers with the standard hand tools according to the standard torque valve for the fastener being used. Please refer to proper documentation for the fastener torque value.
Untightening / Loosing
Untightening Nord-Lock Washers is as simple as tightening. Note that since the locking function is not based on increased friction, the untightening torque is generally lower than the tightening torque.
Therefore it is not possible to measure off torque as verification of locking function.
Reuse
Nord-Lock washers can be reused. As with all fasteners, they should be inspected for wear and tear before re-assembling. Please make sure to re-install the Nord-Lock washers correctly.
Remember to verify that both washers are in good working condition before re-using. If the washers seem to be warned or damaged, Please discard and use a new set.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 6 of 11
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 7 of 11
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 8 of 11
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 9 of 11
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 10 of 11
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.

Service Bulletin: 011-7383
Rev: A Page 11 of 11
This Service Bulletin has NO effect on any warranties.
Please add this bulletin to your SubSea Equipment or Manipulator technical section of your manual.
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC. This document is controlled by Document Control. Printing this document will make the printed copy a “reference” copy. Users are responsible for verifying that this document is the latest revision available.